Analysis:They consistently show up in the Small Red Noise. Always comes up in groups of 4 andhas a rather high drop rate. Should be able to consistently farm 4 rare metals per battle.On a side note, you'll sometimes run into Funkfrogs (No. 3) but the chances are pretty rare.

Hmm my info might be outdated, but you always seems to get 4 from this battle. Plus the frogs are easy to take down.

noise Big bang frog # noise 2diffuculty hardpercent 6.00% at level 1w1d4,5,6,7I would recommend chaining and go for the small noise. This should be the fastest way because they are easy to beat and find